Elastically-articulated shaft and journaling device.



No. 878,859. PATENTED FEB. 11, 1908. N. s. BUK. ELASTIGALLY ARTIGULATED SHAFT AND JOURNALING DEVICE.

APPLIOATION FILED JULY 11, 1907.

NILS SVENSSON BGK, OF STO OKHOLM, SWEDEN.

ELASTICALLi-ARTICULATED SHAFT AND JOUBNALING DEVICE.

To all whom it may concern:

Be it known that I, NILs SvnNssoN Box, a subject of the King of Sweden, and resident of Stockholm, Sweden, have invented new and useful Improvements in Elastically- Articulated Shafts and Journaling Devices, of which the following is a specification.

This invention relates to improvements in elastically articulated shaftand journaling' devices for fast rotating bodies, in which the bearing and :the shaft have each a fixed rocking center.

The object of the invention is to obtain an gas and saferunning of the fast rotating T e invention consists, chiefly, in the combination in an elastically-articulated shaftand journaling-device of a rocking member or members, springs adapted to automatically counteract the rocking move ments of said rocki member or members, and means for contro ling the tension of said s rings in such a manner that the pressure on t e rocking surfaces may be determined by means of said springs inde endently of the weight of the rotating bo all as will be more particularly described herebelow with reference to the accompanying drawing formi a part of this specification.

The invention permits the use of short and thus comparatively strong and light bearings and shafts, the actions of the masses of which-in spite of the ver rapid movements-are fully controlled y the variable power of the said springs, so that during the rotation the said masses will not have any disturbing influences with respect to the direction and size of the powers arising at the bearing surfaces and being necessary for the smooth and safe rotation.

The function of the springs of counteracting the rocking movements renders it possibleat suita 'ly proportioned pressure on the rocking surfaceseto reduce to a minimum the work necessary for returning the rockin bodies into their central positions, and W' thus render it easier to maintain the rotation.

The invention may be applied to vertical, inclined, or horizontal journaling devices independently of the length of the rotating body in the direction of the axis of rotation. In extended rotating bodies the present device is used at both ends thereof while in short bodies it may be used only at the on end of the same.

Specification of Letters Patent. I Application and .Tu'l 11.1907. Seria11lo.383.286.

Patented Feb. 11, 1908.

In the accompanying drawing I have shown two embodiments of my invention applied to a short rotating body supported by an upright shaft. Figures 1 and 2 show each a central vertical section of the device.

Like reference numerals indicate same or corresponding arts in both figures.

Referring to ig. 1, 1 represents an elastically articu ated shaft, supporting a tubesha ed rotating body 2, having a bottom 3 in t e center of which is provided a conical pin 4 having a spherical head 5 the lower half of which rests in a corresponding central recess in a flange 6 at the upper end of the said shaft 1.

The bottom 3 is provided with a screwthreaded cylindrical flange 9 in which is inserted a ring-nut 8. Between the latter and the flange 6 is provided a spring 7 the tension of which is controlled by means of the A spring 17 rests on the frame and sup' ports the said flan e 13 in such a manner that only a suitable part of the Wei ht of rotating system is transferred through the shaft 1 and pins 18 and 19 as pressure to the s herical surface 23 of the bearing-body 11.

y said means the total pressure on the said spherical surface 23 is fully controllable by means'of the loading spring 14. If desired controlling means may be provided also for the spring 17,- though I have not deemed it necessa to show such means.

A similar device may be used for determining the part of the Weight of the rotating body that should suitably rest on the spherical pin 5.

For the spiral-springs 7, 14 and 17 springs of other shape, such as circular spring-plates, may be substituted, and, if desired, also the flanges 6 and 13 may be formed as s rings connected to the shaftand bearing-Bodies res ectively.

ig. 2 illustrates the application of my invention to a journaling device in which the rockingnslurfaces are cylindrical and in which the cy' drical supporting axles cross each other inthe rocking center of the bearing.

articulated bearing-body 11 hav-- v The bearing body 11 is suspended by means of the cylindrical pins in alinement with each other, the said pins being journaled in corres onding recesses of a 21 At right ang es to said ins 20 the ring 21 .18 provided with recesses y means of which it rests on pins 22 likewise in a'linement with each other; (only one pin 22 beln shown by dotted lines in the drawing.) he said pins 22 are secured to the part of the frame 15 surroundin the bearing.

As wi be easily understood the journaling device shown in Fig. 2 works in the same manner as that shown in Fig. 1.

Instead of one or more s rings located concentrically with the axis 0 rotation a greater or smaller number of eccentrically located springs may be provided.

Instead of the cylindrical pins 20 and 22 and the corresponding recesses of the ring 21 shown in Fig. 2 conical pins or edges and corresponding pans may be used. The said edges are placed 1n or near to a lane through the rocking center of the bearing and the shaft respectively. a For the said edges and pans may suitably be substituted thin elastic lamellse secured to blocks used instead of the blocks provided with ed es and pans.

Having now describe my invention what I claim as new and desire to secure by Letters Patent is:

1. In an elastically articulated shaft and j ournaling device for fast rotating bodies, the combination of a bearing body having a fixed rocking center, a shaft in said bearing body, springs arranged to counteract the rocking movements of the bearing body, a rotating body, a in rigidly secured to said rotating body an havlng a fixed rocking center in said shaft, and a spring arranged to countergcti the rocking movements of the rotating 0 y.

counteract the rocking movements of saidrotating body, and means for controlling the tension of said springs, substantially as and for the purpose set forth.

3. In an elastically articulated shaft and journaling device for fast rotating bodies, the combination of a frame, a member mounted to rock in said frame, coiled springs surrounding the rocking member and arranged to counteract the rocking movements thereof; 'one of said springs belng also arranged to sup ort a part of the pressure on the rocking su aces, and a ring surroundi the rockin member and adjustable. in the ame and a fordinga bearing for one of the springs.

4. In an elastically articulated shaft and journaling device for fast rotating bodies, the combination of a frame, a member mounted to rock in said frame and having a flange, a coiled s ring surrounding the rocking member an interposed between the frame and one side of the said flan e, a tension regulating ring surrounding t e rockingl member, and a coiled spring surrounding t e rockin member and interposed between the sai ring and the opposite side of the said flange.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribin witnesses.

NILS S NSSON BOK.

Witnesses:

Enw. DELMAR, JOHN DELMAR. 

